Weatherproof pole-switch.



No. 761,230. PATENTED MAY 31, 1904.

w 0. H. JACKSON.

WEATHERPROOF POLE SWITCH.

APPLICATION FILED MAY 29. 1903.

2 SHEETS-SHEET 1- IO MODEL.

Egg 8140mm cc. PNOTU-LITHCL, WASHKNGTON u c Patented May 31, 1904.

PATENT OFFICE.

CHESTER H. JACKSON, OF PORTLAND, MAINE.

WEATHERPROOF POLE-SWITCH.

SPECIFICATION forming part of Letters Patent No. 761,230, dated. May 31, 1904:.

Application filed May 29, 1903. Serial No. 159,345. (No model.)

To all whom it may concern:

Be it known that I, CHESTER H. J ACKSON, a citizen of the United States, residing at Portland, in the county of Cumberland and State of Maine, have invented new and useful Improvements in Weatherproof Pole-Switches, of which the following is a specification.

My invention relates to new and useful improvements in weatherproof pole-switches for electric systems; and its object is to provide a casing of non-conducting material within which is affixed a socket which is connected to one wire of a circuit.

A further object is to provide a reciprocat-- ing plunger connected to the other wire of the circuit and which. is adapted to be slid into engagement with the socket to complete the circuit.

A further object is to employ means for breaking the circuit in oil, so that the current will not are across the plunger and socket; and another object is to provide a locking device whereby the withdrawal of the plunger from the casing is prevented.

WVith the above and other objects in View the invention consists in the further novel construction and combination of parts hereinafter more fully described and claimed, and illustrated in the accompanying drawings, showing the preferred form of'my invention, and in which Figure 1 is a side elevation of the switch. Fig. 2 is a section on line 2 2, Fig. 1. Fig. 3 is a View similar to Fig. 2, but showing the plunger removed from its socket. Fig. 4 is a section on line 4 4, Fig. 3, and Fig. 5 is a section on line 5 5, Fig. 3.

is preferably secured in position within the lower end of the casing by means of screws 10. A socket 11 extends downward from and is integral with the plug 6, and this socket is slotted longitudinally, as shown at 12, and the lower end thereof is inclosed by a coiled spring 13, which serves to hold the slots normally closed. The chamber formed by the tube 8 is partly filled with oil for the purpose of insulation to destroy the are which follows the plunger when it is pulled from the socket. The inner end of the wire 4 is secured within the upper end of plug 6 and is electrically connected thereto.

A screw-threaded aperture 14 is formed in the center of the base-plate 9 and receives a tubular nut 15, within which is arranged packing 16, which incloses a plunger 17, slidably mounted within the nut and extending into the tube 8. A disk 18, havinga concaved inner surface,is arranged within the nut 15 and bears upon packing 16, and this disk is held in place by a nut 19, which extends over and is threaded upon the outer end of the nut 15. The outer end of the nut 19 is slotted longitudinally and is inclosed by a coiled spring 20, which causes the slotted end of the nut to bear firmly upon the plunger 17 A handle 21 is formed at the outer end of plunger 17, and a slot 22 is formed in the inner end of the plunger, and pivoted within this slot is a dog 23, which is normally pressed outward by means of a spring 24. The second wire 25 of the circuit is secured to the base-plate 9, as shown in Fig. 4, and this wire, as well as the wire 4, is provided'with a coupling-sleeve 26, whereby the line-wires may be readily connected thereto.

When it is desired to complete the circuit between wires 4 and 25, the plunger 17 is pressed inward by means of handle 21,and the inner end thereof is brought into contact with and slides into the socket 11, thereby spreading the slotted end thereof. A circuit is thus established from wire 4 through plug 6, socket 11, plunger 17, nuts 19 and 15, and base-plate 9 to the wire 25. To break the circuit, it is merely necessary to draw the plunger 17 outward until withdrawn from the socket 11, and the oil within the tube 8 prevents any pos sible are between the plunger and the socket. The dog 23 will prevent the plunger 17 from being completely withdrawn from the casing 1.

A switch constructed in accordance with my invention is absolutely weatherproof and. is therefore particularly adapted for use upon poles and. their exposed supports.

In the foregoing description I have shown the preferred form of my invention; butI do not limit myself thereto, as I am aware that modifications may be made therein without departing from the spirit or sacrificing the advantages thereof, and I therefore reserve the right to make such changes and alterations as may fairly fall within the scope of my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In an electric switch, the combination with a casing, of a socket therein at one end and electrically connected to one wire of a circuit, a plunger slidably mounted in the other end of the casing and electrically connected to the second wire of a circuit, said plunger being adapted to engage the socket, a dog pivoted within a slot in the plunger, and a spring within the slot for holding the dog normally projected from the slot.

2. In a switch of the character described, the combination with a casing having a socket therein adapted to be electrically connected to one wire of a circuit; of a base-plate within the casing adapted to be electrically connected to a second wire, a plunger slidably mounted within the base-plate and electrically connected therewith, said plunger being adapted to project into the socket to complete a circuit, a dog pivoted within a slot in the plunger and means for holding the dog normally projected from the slot.

3. The combination with a casing having fastening means integral therewith, of a baseplate secured to one end of the casing, a plunger slidablymounted therein, a nut interposed between the plunger and base-plate, packing within said nut, a concaved disk within the nut and inclosing the plunger, a retaining-nut for said disk bearing upon the plunger, an insulating-tube within the casing and upon the base-plate, a longitudinally-slotted socket supported thereby in the path of the plunger, means for holding the slots normally closed, and means for preventing the withdrawal of the plunger from the base-plate.

4. The combination with a casing having fastening means integral therewith; of a base-' plate secured to one end of the casing, a plunger slidably mounted therein, a nut interposed between the plunger and base-plate, packing within said nut, a concaved disk within the nut and inclosing the plunger, a retaining-nut for said disk bearing upon the plunger, an insulating-tube within the casing and upon the base-plate, a longitudinally-slotted socket supported thereby in the path of the plunger, and means for preventing the withdrawal of the plunger from the base-plate.

5. The combination with a casing, of a baseplate secured to one end of the casing, a plunger slidablymounted therein, a nut interposed between the plunger and base-plate, packing within said nut, a disk within the nut and inclosing the plunger, a retaining device for the disk having its outer end slotted, a coiled spring embracing the slotted portion of the retaining device, an insulating-tube within the casing and upon the base-plate, a socket supported thereby in the path of the plunger, and means for preventing the withdrawal of a plunger from the base-plate.

6. The combination with a casing having fastening means integral therewith, of a baseplate secured to one end of the casing, a plunger slidably mounted therein, a nut interposed between the plunger and base-plate, packing within said nut, a concaved disk within the nut and inclosing the plunger, a retaining-nut for said disk bearing upon the plunger, an insulating-tube within the casing and upon the base-plate, a longitudinallyslotted socket supported thereby in the path of the plunger, a coiled spring embracing the lower end of the slotted socket, and means for preventing the withdrawal of the plunger from the base-plate.

7. The combination with a casing, of a baseplate secured to one end of the casing, a plunger slidably mounted therein, a nut interposed between the plunger and base-plate, packing within said nut, a disk within the nut and inclosing the plunger, a retaining device for the disk having its outer end slotted, and means to cause the retaining device to bear firmly on the plunger.

8. In an electric switch, a casing having a compartment therein, a plate at one end of the compartment, a plug in the opposite end, an insulating-tube resting upon the plate, a socket extending from the plug and within the tube, and a plunger extending through the base plate and adapted to engage the socket.

9. In an electric switch, a casing having a compartment therein, the diameter of the upper portion of said compartment being reduced, a base-plate at the lower end of the compartment, a tube resting on the base-plate, a plug in the reduced portion of the compart' ment, a flange on the plug adapted to bear upon the tube, a socket formed integral with in the tube, a second circuit-wire passing through the arm of the casing, and connected to the socket, a plunger extending through the base-plate and adapted to engage the socket, and an insulating fluid within the casing,

In testimony whereof I aflix my signature in presence of two witnesses.

CHESTER H. JACKSON. Witnesses:

SAMUEL L. BATES, E. 'H. WILSON. 

